ASTM A270 Sanitary Stainless Steel Pipe , 600 Surface Food Grade Stainless Tubing

supply ASTM A270 Sanitary (Hygienic) Stainless Steel Tubing and Pipe 600 surface

zheheng steel is one manufacturer ,exporter ,supplier of  astm a270 sanitary (hygienic) stianless steel tubing,we are not only give you the compettive price but also have good quality.

more parameter about A270 

ASTM A270 stainless steel tube size range
ASTM A270 sanitary stainless pipe usually refers to the small pipe diameters, normally from 1/2” to 2 1/2”, thickness from 0.049 in (1.24mm) to 0.15 in (3.81mm).
The maximum outer diameter of ASTM A270 tubing is 12 inches (304.8 mm).
ASTM A270 tubing using inch-pound as the standard unit of measure.
Wall thickness tolerance shall not vary more than 12.5%.

Referred standard for ASTM A270 sanitary tubing
ASTM A 262: Methods of detecting intergranular corrosion for the magnetization coefficient.
ASTM A 480/A 480 M is the general specifications for flat stainless steel, heat-resistant stainless steel plate, sheet and steel bars.
ASTM A 923 Test methods for detecting detrimental intermetallic phase in duplex austenitic/ferritic stainless steels
ASTM A 967 is the specification of passivation treatment for stainless parts .
ASTM A 1016/1016 M is the general specification for ferritic alloy steel, austenitic alloy steel and stainless steel.
E 527 is the test methods for numbering metal and alloy
ASTM B 46.1 surface structure (surface roughness, waviness and layers).
ASME boiler and pressure vessel’s numbers and other standards.

1. Superior Surface Finish
The traditional annealing :Open furnace---Oxygen atmosphere---form Scale, tarnish the material,For more than 12m tubes this method is hard to clean inner surface.

A special bright annealing:Closed furnace---Intert atmosphere use noble gases(Nitrogen and argon)Preventing Oxygen to contact with marterial ---Surface finish is clean,bright and precision,which is an excellent starting point for further process,like electro-polishing and mechanical polishing. For more than 12m tubes,this method is much cleaner smoother on both inner and outer surface.

2. Better Mechanical Property

The temperature of furnace can reach more than 1350℃,and the tolerance for setting and real temperature can be controlled whithin +/-2℃,which is impossible for the traditional annealing.

3. Perfect Inspection Method And Inspection Equipment
100%PMI test
100%Hydraulic test
100%Inner cleaned by sponge
100%Dimension test
100%Surface test

Quality of precision drawn tubing is same to precision rolling.

4. More Precision Dimension
Advanced cold drawn technology from Japan and Korean,Making the close dimension controls.

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